This paper reports the preparation and characterization of an Au electrode modified with self-assembled alkane ferrocenes, in the absence and in the presence of ?-cyclodextrins ( ?CD). Electrode modification with ferrocene derivatives was achieved through a self-assembled monolayer (SAM) approach, using ferrocenyl hexane thiol (FcC6) and ferrocenyl undecane thiol (FcC11); the same was also done using per-6-thio-?-cyclodextrin. The different SAMs prepared were characterized by both cyclic voltammetry and electrochemical surface plasmon resonance (EC-SPR). The behavior of both single and binary monolayers including their interfacial reorganization was investigated and critically discussed, according to the nature of theSAMused. Cyclic voltammetry combined with SPR measurements revealed the reorientation of the SAM concomitant with the oxidation of ferrocene moieties. In particular, the electron shuttling of FcC11 through the ?CD cavity (mixed SAM) was also evidenced by both SPR and the electrocatalytic oxidation of ferro(II)cyanide.

Ferrocenyl Alkanethiols-Thio beta-Cyclodextrin Mixed Self-Assembled Monolayers: Evidence of Ferrocene Electron Shuttling Through the beta-Cyclodextrin Cavity / Frasconi, Marco; D'Annibale, Andrea; Favero, Gabriele; Mazzei, Franco; Santucci, R; Ferri, Tommaso. - In: LANGMUIR. - ISSN 0743-7463. - STAMPA. - 25:22(2009), pp. 12937-12944. [10.1021/la9018597]

Ferrocenyl Alkanethiols-Thio beta-Cyclodextrin Mixed Self-Assembled Monolayers: Evidence of Ferrocene Electron Shuttling Through the beta-Cyclodextrin Cavity

FRASCONI, Marco;D'ANNIBALE, Andrea;FAVERO, Gabriele;MAZZEI, Franco;FERRI, Tommaso
2009

Abstract

This paper reports the preparation and characterization of an Au electrode modified with self-assembled alkane ferrocenes, in the absence and in the presence of ?-cyclodextrins ( ?CD). Electrode modification with ferrocene derivatives was achieved through a self-assembled monolayer (SAM) approach, using ferrocenyl hexane thiol (FcC6) and ferrocenyl undecane thiol (FcC11); the same was also done using per-6-thio-?-cyclodextrin. The different SAMs prepared were characterized by both cyclic voltammetry and electrochemical surface plasmon resonance (EC-SPR). The behavior of both single and binary monolayers including their interfacial reorganization was investigated and critically discussed, according to the nature of theSAMused. Cyclic voltammetry combined with SPR measurements revealed the reorientation of the SAM concomitant with the oxidation of ferrocene moieties. In particular, the electron shuttling of FcC11 through the ?CD cavity (mixed SAM) was also evidenced by both SPR and the electrocatalytic oxidation of ferro(II)cyanide.
2009
electrochemistry; sensors; self assembling; Gold electrode; cyclodextrins
01 Pubblicazione su rivista::01a Articolo in rivista
Ferrocenyl Alkanethiols-Thio beta-Cyclodextrin Mixed Self-Assembled Monolayers: Evidence of Ferrocene Electron Shuttling Through the beta-Cyclodextrin Cavity / Frasconi, Marco; D'Annibale, Andrea; Favero, Gabriele; Mazzei, Franco; Santucci, R; Ferri, Tommaso. - In: LANGMUIR. - ISSN 0743-7463. - STAMPA. - 25:22(2009), pp. 12937-12944. [10.1021/la9018597]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/228841
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